Classifier.



C. HOYLE & H. A. GUESS.

oLAssIPIBR.

APPLICATION FILED JUNE 8, 1910. 1,007,205, Patented Oct. 31,1911.

2 SHBETS*SHEET l.

f7 "Uhl JUIN/HM (Z uhh-Emil C. HOYLE & H. A. GUESS.

GLASSIFIBR.

APPLICATION FILED JUNBB,1910.

1,007,205. Patented 0111.311911.

2 SEBETSWSHBET 2.

Ullllllhll llllllllllIIIIIH'HIIIIIIII XW* QMMHOMW @W UNITED STATES PATENT ernten.

CHARLES HoYLE, or EL oRo, MEXICO, AND HARRY A. GIIESS, or FLAT RIVER,

MISSOURI.

CLASSIFIER.l

Specication of Letters Patent.

Patented oct.

To all whom 'it may concern:

Be it known that we, CHARLES HoYLE, a citizen of the United States, residing at El Oro, State of Mexico, Republic of Mexico, and HARRY A. GUESS, a citizen of the United States, residing atJFlat River, in t-he State of Missouri, have invented certain new and useful Improvements in Classiiiers, of which the following is a specification.

This invention relates to improvements in classifiers and separators adapted mechanically to separate articles of different materials and different specific gravity and particles of the same material which vary in size.

One of the principal objects of the invention is to provide a classifier which shall produce an effective and complete separation of extremely fine particles of materlal commonly known as slimes from the coarser particles which are commonly known as san/ds or concentrates.

Another object of the invention is to provide means for slowly but continuously discharging the coarser or heavier material in such a manner that it may be thoroughly washed and theplighter and finer material completely separated therefrom. A

The further objects of the invention will be hereinafter more fully set forth in the following description of one form of apparatus embodying the invention, which consists in the new and novel features of construction and combinations of parts Set forth and claimed.

In the accompanying drawings: F igurel I represents a side elevation partly in sectlon of the classifier. Fig. II represents a plan view of the same. Fig. III represents a detail 'view of one of the blades or Scrapers.

The classifier comprises. a settling box 1, which may be made of any suitable material, as wood, metal or fiber. The sides are preferably vertical, but the ends are inclined, one of them, as 2a, preferably having a steep pitch and the other,- as 2", having a much more gradual pitch, and being extended a considerable distance `above the level of the sides and the other end.

The material to be classified is fed to the settling box from any suitable source of supply through a trough 3. Sald trough is preferably provided with a plurality of openings 4 through its bottom, whereby the material is delivered to the settling box with as little disturbance as possible. A baille plate 5 may be arranged immediately below7 said trough so as to properly distribute the material over the bottom of the Settling box.

An overow pan 6 is arranged in the box so that its top will be slightly below the'top of the sides. The pan iscentrally located in the box and is shallow near its edges, so that the bottom thereof will forma shelf or baie, which will tend to break up any ascending currents which might carry coarser material than is desired. The pan` communicates through a Suitable spout or opening 7 with an outlet pipe 8 which passes through the lsides of t-he settling tank to convey the slimes. The top of the pan is preferably provided with an adjustable bead 9 whereby the height thereof may be varied somewhat if desired. l

In order to remove the coarse material from the settling box, an endless carrier is provided., which comprises blades or Scrapers" permit the sera-pers to be employed with a minimum disturbance of the body of liquid.

An outlet 19 is provided near the upper end of the sloping extended bottom 2b of the settling tank for the discharge of the coarser material on to a oonveyer of any Suitable or desired construction. A pipe 20 provides means for ldelivering a quantity of water or other liquid Such 'as a solution of cyanid .or other chemicals against. the

coarser material which is being dragged up' the linclined bottom, thereby.' thorou hly washing same and removing all of the slimes or fine material.

Q accaaca ln operation the material to be classified is delivered by a current of water cr other liquid to the feed trough, from which it passes through the openings provided there- 1n over the baille plate into the settling box. The overow pan is absolutely horizontal so that the water and slimes or liner material will How over the edge in an .even

stream and be discharged through the discharge pipe 8, while the coarse material settles to the bottom.4 The coarse material is then drawn by the Scrapers l0 up t-he inclined bottom, which is of sucient length to permit most of the water or other liquid which is drawn out of the settling box or delivered from the supply pipe to drain O.

By this construction a very close division can be obtained between the material discharged to the overflow pan and the material removed by the Scrapers. Heretofore much diliiculty has been experienced in the separation of materials because a quantity of slime has almost invariably been removed with thecoarse material and a certain amount of fine sand has been removed with the slimes, thus interfering with the subsequent treatment of each product. rl"he arrangement of parts herelny disclosed produces a clear line of demarcation, which can be regulated to some extent by the adjustable bead 9 on the top of the overflow pan. The discharge ot the coarse sand is continuous and in one direction, over a distance suicient to prevent. waste of the liquid or solution which is used.

Although one form` of mechanism embodying this invention has been shown and described, it is obvious that various changes within the skill of the mechanic may be made in the details of this mechanism without departing from the spirit of the invention, provided the means set forth in the following claims be employed We claim as our invention: V

1. ln a classifier the combination of a settling box having an inclined bottom extending above the overflow level, an extended overdow pan in said box spaced trom the ends thereof and presenting an overdow edge, a conveyer in said box encircling the overflow vpan in a verticaly plane and comprising an endless series or transverse spaced Scrapers extending across said box and adapted to engage the bottom, said series extending along said bottom to above the liquid level.

2. ln a classier the combination of a settling box having an inclined bottom extending above the overow level, a horizontally extended overflow pan having an approximately flat bottom adapted to serve as a baille retarding the direct upward dow ol liquid from the bottom of the box, said pan belng spaced from the ends oit the box and presentmg an overow edge, a conveyer in said box encircling the overflow pan in a vertical plane and comprising a series ot Scrapers adapted to engage the bottom, said series extending along sa1d bottom to above the liquid level.

'lhis specilication signed and witnessed this 28 da of May and this second day of May, A. 1910. y

CHARLES HOYLE. HARRY A. GUESS.

Witnesses as to Charles Hoyle:

H. A. Dorm, G. A. GUERRA.

Witnesses as to Harry A. Guess:

C. R. WooDWAnn, A. G. VAN RcwznLEN. 

